Improvement in clock-calendars



2 SheeTs Sheet i.

MOOE

C. M. (ILENTON & L. improvement in Cock-Calenda s. .No.128,854.

Patented Ju!y 9, 1872.

2Sheets--Sheet2.

C. M. CLINTON & L. MOOD.

Improvement in Clock-Calendars.

N0, 128,854, Patentedjuly 9,1872.

ll III II IIIIIIIJIIIIIH n u l UNITED STATES PATENT OEEIoE.

CHARLES M. CLINTON AND LYNFRED MOOD, OF ITHACA, NEW YORK.

lMPROVEMENT IN CLOCK-CALENDARS.

Specification forming part of Letters Patent No. 128,854, dated July 9, 1872.

SPECIFICATION.

To all whom it may concern:

A specification describing certain Improvements in Calendar Clocks, invented by CHARLES M. CLINTON and LYNFRED Moon, of Ithaca, Tompkins county, New York.

The object of our invention is to make a simple durable calendar, whose changes shall be accurate, and irrespective of the position of the calendar and clock; and our invention relates to the mechanical devices by which these changes are effected, and these will be apparent as we describe our calendar.

Figure l is a view of our improved dialface; Fig. 2, a view of the calendar with face removed. Fig. 3 is an end view from the point indicated by the arrow of Fig. 2. Fig. 4 is a view of theback side of the forty-nine-cog wheel, and of the action of the springZ on it. Fig. 5 is a section view of the screw-shaft i, and the cup-ring fast to it; Fig. 6, a view of a portion of the disk-plate wheel, which removes the superfluous days of the 31-day wheel in certain months.

In Fig. 1, a is the frame holding the glass face I) and o is the row of numbers for the days of the month painted on the glass; and d, the center of the glass painted to show at the left hand the day of the week, and at the right hand the month; and c is the pointer behind these parts. This arrangement enables any one to open the face to the calendar without detaching any part of the calendar. In Fig. 2, f is the day-of-the-week roller and g the monthroller, represented in the drawing unlettered, but having one set of words for the day-ofthe-week roller and one for the month-roller. At h is a wheel which revolves once in twentyfour hours, which, by cogs, or angled universal joint, or other means, connects with the time-piece of the clock, and it is on the top of the shaft i and near the bottom of this shaft is a fixed cup-shaped metallic ring, 6, fast to i, with one slot, j, in it. On the upper edge of this ring rests the tooth of a cogwheel, k, having seven teeth, and this cogwheel is has another tooth in the thread of the lower screw on of the double-threaded piece I; and the upper screw n is in the cogs of a seven-toothed upper wheel, 0, seen by dotted lines behind the screw it and a spiral spring, 12, is on the shaft z, thrusting down the revolving, but movable, double-coil piece Z on the ring i. The action of these parts is, that the cog on the edge of the ring 2' resists the thrust of the spring 1), and the cogs k and 0 cannot turn, while the screw-threads are, by the revolving cog It, turned up the height of one tooth each of 7c and 0 without revolving these cogs; but the instant (midnight) the slot j comes to the tooth of the cog 7c bearing on the upper edge of the ring 6 that tooth drops through the slot j, and that lets down the screw-piece linto the cap of the ring i, when the threads revolve the wheels k and 0 one tooth and hold fast these cog-wheels until another tooth of the cog k is hearing on the ring i and thus, at each midnight, these daily changes are made of the week-roller f, and of the 31-day wheel q and the pointer e on its shaft.

W'hile describing this ring, these screwthreads, and spring, and cog-wheel teeth, through a slot in the ring it will be noticed that at sis another ring with its slot 8 and other parts, like those already described, for the purpose of changing at the end of each month the month-roller g, with the difference that it is on a horizontal shaft.

Certain other parts are to be noticed, one

these teeth can be depressed into the slots seen beneath them, (Fig. 2,) as the months of twenty-eight, twenty-nine, and thirty days require. The mechanism which operates these movable teeth is as follows: Back of the 31-da wheel is the plain cog-wheel a, (Fig. 3,) of fortynine teeth, which play in the cogs of a wheel, 11, with forty-eight teeth, just behind the diskplate wheel 20, and all these four wheelsq, u, o, and w-move daily in unison with each other. The forty-nine and the forty-eight cogs are for the purpose of properly moving the disk-plate wheel, which has the holes 3 in it for the number of days of each month for a period of four years. The 31-day wheel moves one tooth in twenty-four hours, and the fortyeight cog a distance which need not be accurately stated, only that it is so far that the disk-plate wheel, fast to the same shaft as the forty-eight cog, has ample space for the holes 3 in it without interfering with each other and as the 31-day wheel and the fortynine-cog wheel each revolve twelve times a year it is easily seen that the forty-eight-cogwheel revolves twelve times and a quarter each year; thus the forty-eight cog and the disk-plate wheel-for example the first year after leap-yearhave gained one-quarter of a revolution by the action of the forty-ninth cog of the forty-nine-cog wheel, and the second year a halfrevolution, and the third year threequarters of a revolutiion, and the fourth year a whole revolution, and is at the place of beginning, and this while these connected wheels have been changing everyday of each year. While this has been going on in a month of thirty-one days, the pins t on the arms, which hold the movable cogs t t t, have found three holes in the disk-plate wheel w and in a month of thirty days the pins t have found two holes in the disk-plate w; and in a month of twenty-nine days, or leapyear, one hole; and in a month of twentyeight days there are no holes at all arranged to let the pins t through the disk-plate wheel. The plan of this arrangement is seen in the enlarged view given in Fig. 6, which represents the curve of the disk-plate as laid out flatly. The top row of holes is along the line 1, and has three holes, and is for the month of January; the line 2 has no holes, and is for February, of twenty-eight days, and so on to line 12, which is December- Thus the pins t, by these holes 3 put the cogs t t t, Fig. 1, out of the way. But this alone would not cause the four wheels concerned in the length of the various months to revolve; therefore in Fig. 3, and especially in Fig. 4, a spring, 2, is seen, with an uppercurve and alower curve, and an angle at z, and a pin out of the wheel a at 2. As the wheel (Fig. 4) revolves, as indicated by the arrow, the pin 2 strikes the upper curve and lifts the spring to the dotted lines, when the pin z passes the angle 2 of. the spring and then the action of the springis to drive on in the direction of the arrow the wheel a, and at the same instant the pins t a are in place to be acted on by the disk-plate wheel, or go into the holes 3 as may be required; and thus the four wheels are, by the spring z, moved so that the proper tooth either movable or a fast one, is ever in con, tact with the cogs of the pinion 70. I

The advantages and uses of our invention are apparent to those skilled in the art to which it appertains.

G lat'ms.

1. We claim the screw-coils or threads m, n,

for the base of the worm m to rest on while the slot j is passing one of the teeth of the wheel 70, substantially as set forth.

3. The double screw-threaded piece I, made as described, for changing the day-of-the-week roller and the 31-day wheel, as set forth.

4. We claim the combination of the propelling-spring z with the wheels q, u, o, and w .for the purpose of moving these wheels forward, substantially as set forth.

5. The disk-plate Wheel 20 in combination with the movable teeth t t t, as described.

6. The combination of the four wheels q, u, v, and w, acting together to regulate the length of the months in a calendar movement, as set forth.

7. We clainlthe glass dial-face b, with aclear outer circle, 0, for the figures of the days of the month, and through which the pointer e shows, and with the inner painted or obscured portion (Z so made as to show clear spaces for the day-of-the-week and the monthof-the-year rollers, substantially as set forth.

0. M. CLINTON.

L. MOOD. Witnesses:

SAMUEL J. PARKER, P. TARBELL.

Am An 

